html, body {
    margin: 0px;
    background-color: #1b1b1b;
    color: #d0d0d0;
    font-family: sans-serif;
}

.main-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.main {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: min(500px, 70vw);
}

.logo {
    text-align: center;
}

.logo > img {
    width: 200px;
}

form#login-form {
    display: flex;
    flex-direction: column;
    gap: 30px;
    opacity: 0;
    transition: opacity 0.3s;
}

form#login-form input {
    font-size: 1.5rem;
    border-radius: 5px;
    border: 1px solid #303030;
    padding: 5px;
    color: #d1d2d3;
}

.main:hover > form#login-form {
  opacity: 1;
}

form#login-form input[type="text"], form#login-form input[type="password"] {
    background: #292929;
    text-align: center;
    outline: 0;
    transition: border-color 0.3s;
}

form#login-form input[type="text"]:hover, form#login-form input[type="password"]:hover {
    border: 1px solid #444444;
}

form#login-form input[type="text"]:focus, form#login-form input[type="password"]:focus {
    border: 1px solid #444444;
    transition: none;
}

form#login-form input[type="submit"] {
    background: #00a0e0;
    font-weight: bold;
    transition: border-color 0.3s;
    color: #1b1b1b;
}

form#login-form input[type="submit"]:hover {
    border: 1px solid #00a0e0;
}

form#login-form input[type="submit"]:active {
    background: linear-gradient(#424242, #585858);
    transition: none;
}

.popup-layer {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    pointer-events: none;
}

.popup {
    padding: 10px 20px;
    margin: 50px auto;
    width: fit-content;
    background: #920018;
    border: 1px solid #49001e;
    border-radius: 2px;
    color: #ffecf1;
    opacity: 0;
    animation: popup-show 0.2s linear both;
}

.popup.hidden {
    animation: popup-hide 0.2s linear both;
}

.spinner {
    margin-top: 40px;
    height: 45px;
    pointer-events: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
    -ms-user-select: none;
    user-select: none;
}

@keyframes popup-show {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes popup-hide {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}